1111001211311 has 2 divisors, whose sum is σ = 1111001211312. Its totient is φ = 1111001211310.

The previous prime is 1111001211283. The next prime is 1111001211349. The reversal of 1111001211311 is 1131121001111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111001211311 - 2¹⁸ = 1111000949167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111001211611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555500605655 + 555500605656.

It is an arithmetic number, because the mean of its divisors is an integer number (555500605656).

Almost surely, 2^{1111001211311} is an apocalyptic number.

1111001211311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111001211311 is an equidigital number, since it uses as much as digits as its factorization.

1111001211311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 1111001211311 its reverse (1131121001111), we get a palindrome (2242122212422).

The spelling of 1111001211311 in words is "one trillion, one hundred eleven billion, one million, two hundred eleven thousand, three hundred eleven".